Meat chopper



Dec. 20, 1932 A. JAHN MEAT CHOPPER Fild Jan. 25. 1931 In Ve tan' Patented Dec. 20, 19 32 UNITED STATES AUGUST JAHN, OF HAMBURG, GERMANY MEAT CHOPPEB.

Application filed January 23, 1931, seria No.

Meat choppers are known with exchangeable double edged blades, in which each blade is provided with a separate bridge projecting into a slot of the knife body arm and is drawn 5 tightly on to the seat of the knife arm by means of an extensive bolt, rot-atably mounted in the knife body arm.

Further meat chopper knives with interchangeable double edged blades are also known, which rest tightly against the knife body without special fixing means. In these knives each blade is clamped with its ends between the knife body and a pin on the free end of the knife body aim.

The known means of fixation however are open to the objection that the blades arranged between two perforated discs do not .shift on the arms of the knife body transversely thereto, that is transversely to the cuttin direction, and consequently cannot be a'dpsted relative to the perforated discs so that`a guarantee is obtained that all blades bear uniformly and simultaneously against the perforated discs along theirentire length. This ensuresthat the blades can work like a milling cutter in the'perforated discs,

whereby the blades and perforated discs become prematurely useless, apart from the fact that a perfect cut cannot be-obtained, but

only a crushing ofthe material to becut takes place, destroyig the fibres thereof and reducing its quality.

y According to the application which relates also to a meat chopper with exchangeable double edged blades, each of. which engages by means of a hole apivot arranged on the surface of the knife body arms andis held on the knife body without special fixing means, the abov e mentioned objections are 40 overcome in a simple manner in that the holding pivot provided with a hammer head holds the blade between 'its ends, and the blade ends bear freely on the upper 'surface of the lmife body arms.

This fi-xation presents the advantage that the blades sit tightly on their support, but nevertheless in work automatically 'bear uniformly and simultaneously along their en-, tire length against the two perforated discs arranged parallel the one to the other' and 510,776, and in Germany February 19, 1980.

between which *the blades are mounted, by adjusting one of the perforated discs, so that the discs are saved and a good cutting eifect is obtained.

An embodiment of the'invention is illustrated by way of example in the accompanying drawing in which:

Fig. 1 shows a view partly in section, Fig. 2 a side view to Fig. 1, Fig. 3 a plan view with a blade before being fastened, and Figs. 4 and 5 illustrate'a blade alone in a view in elevation and in plan view.

Round the hub a are arranged arms a which support blades b and whose bearing area d for the blades b runs' tangentially to the hub a of the member. On each arm a a holding pivot e is rigidly fixed, the head of which is flattened after the fashion'of .a hammerhead, its long dimension extend'ng) in the same direction as the arm c. Th ades b each have a hole g-made in its shape adapted to the head f ofthe pivot e and running in the transverse direction of the blade b.

The fastening of the blades b is accomplshed by laying them on the arms c in trav- 4 erse direction to the same, the holding pivots e, f hereby piercingthe holes g. Ten the blades are swung`round and brought in to line with the member arms 0, the head f of the holding pivots ehereby taking hold of the blades b from behind, so that they cannot unintentionally get loose, without however losing the. faculty of fighting themselves' to each other and to the perforated discs h.

'In order to connect the blades b with tension 'power, it is advisable to slightly press them as shown inexaggerated manner in. Fig. 4 by the dimension 8. Notwithstanding- 'being bent, the blades b can easily be' fastened 'to the arms f the star shaped member, as they are put on its traverse direction so that. they' can easilybe held by the heads f ofthe holding pivots e and get their' full tension only after resting with their free' ends on the arms c of the star shaped member.

- In a meat chopper the combination of exchangeable double-edged blades, each having a non-Circular hole, a star-shaped men'be U with a plurality of arms, each arm adapted to carr one of said blades; pivot pins each with a ammer-shaped head arranged one on'.

i each of said arms adapted to 'allow limited movement of. the blades within' the .general plane of each, the hammer head overlayingth'e blade preventing'removal thereof when-the blade extends in the general direction of the arm and said hammer head being so shaped and proportioned as to register with the hole' in the blade when said blade extends transversely to the arm to permit removal there- I from, one 'end of the blade' when in operative position'beimg adjacent the end of the arm "and the other' spaced from the next adjacent arm.

In testimony Whereof I afiix my Signature. 'i

. 'AUGUST J AHN. 

